I am testing this with a current gen iPod Touch 64GB and have some issues:
First is is simply slow - took 10 minutes to scan and display the 34 Apps I have on this Touch.
Second, while faster with Music it is showing me only 2 rows of of about 6 characters in the music list. I can click any "empty line" and the title shows in the far right playback window and will play but the song titles never show in the central list.
Ah - discovered if I click another category and then back to "Music" it will show the list. However 50% of the "Artis" column is empty and 90% of the Albums are listed as "(null)" when I know iTunes and the iPod itself show them fine.
Third - the window cannot be resized to provide more width to spread out the columns.
Fourth - noticed a very basic oversight that does not instill confidence in me: in my running copy and it is even in their image here in MU, look at the upper left where it says "iDevice Statu" instead of "Status". This is v 1.4.0 and has the misspelling been overlooked since it was in beta?
This Touch has iOS 7.0.2 so is up to date.